This book is in the pantheon of bridge books. It's the one classic book that is often mentioned in other bridge books, including other classics.
If you also want my opinion: that's no coincidence. The writing is superb (unlike in, oh 99% of bridge books). The hands are well chosen, a few oddities are thrown in, but most seem realistic, and the analysis manages to bring out the beautiful depths hidden in them without the endless double-dummy over-analysis so common in bridge literature. This book is recommended for players of all level. Admitedly beginners will be overwhelmed by many of the analyses and plays, but this is one of the most entertaining introductions to the finer points of bridge.